code: def get_client():
      from docs_src.security.tutorial006_an import app
  
      client = TestClient(app)
      return client
  
file_path: fastapi/tests/test_tutorial/test_security/test_tutorial006_an_py39.py
imports: from base64 import b64encode
  import pytest
  from fastapi.testclient import TestClient
  from ...utils import needs_py39
label_desc: Use image node_id 1 for calling a global function with example usage: get_client() and returns: client